Samuel fawcett



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SAMUEL .liAI/VOE'IT, OF ROCHESTER, NEW YORK.

Letters Patent No. 82,211, dated September 15, 1868.

IMPROVEMENT IN GUTTER-HEADS.

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TO ALL WIIOM ITIMAY CONCERN:

Be it known that I, SAMUEL FAWCETT, of Rochester, in the State of NewYork, have invented a. new and useful Cutter-Head; and I do herebydeclare that the followingjs a full, clear, and exact descriptionthereof, reference being had to the accompanying drawing, making part ofthis specification, in'which- Figure 1 is a transverse-section, takenthrough near the chisels.

Figure 2 is a side elevation of wings, and a part of the head, as far asthe red lines in fig. 1.

Figure 3 is a vertical section ofthe upper part ofthe wing, showing theposition ofthe adjusting-screw.`

The nature of my invention will be understood from the drawings andspeeications.

To enable others skilled in the art 1to make and use my invention, Iwill describe its construction and operation.

The wings A, of common rotary planer-heads B, which carry the chisels a,are, with the head, made in one pieee, as shown at B. This arrangementis inconvenient for adjusting the chisels a, so thatthey will traveldirectly in the same line; the only means of making them do so being byloosening the set-screw c, that holds the chisels, and packing them. Toavoid this, I cast the wings A and head in separate parts. The head Bhas a projection, x, on each side, which is dove-tailed, as shownat d.The wings have. dove-tail grooves, that are tted to the dove-tailprojection x of the head B. The dove-tailed projections are shorter thanthe head.

In making the dove-tailed grooves in the wings, they may be planed theentire length, and a piece,f, iig.` 3, fitted in the top, to sustaintheadjusting-screw e, or the upper lend of the groove can be closed incasting, which will form a rest for the screw e. l

In the top of the projection se, a hole, t, fig. 1, is made, into whichthe adjusting-screw e is fitted, shown in dotted lines, gf2. This screwhas a square headfor a wrench, and, just below the square part, ashoulder is formed. Below the shoulder, a recess is turned, sufficientlywide to receive the edge of the seat supporting the screw. The edge of'the seat for the screw is also recessed to receive the same. By thisarrangement, the screw is held in its place, and, when it is turned, itcauses the wings to move longitudinally with the shaft.

The arrangement for holding the chisels is the same as iin commoncutter-heads of this class. A set-screw, y, is put into the side of thewings, to clamp them when adjusted. v

The object of this invention is to adjust the chisels of rotary planetswithout loosening the chisels, and one or both wings may bemade inaccordance with this device.

The operation is as follows:

The wings A beingattached to the head B, by entering the projection ofthe head into the groove of thc wing, the adjusting-screw is insertedinto thc hole in the top of the projection the upper collar of theadjusting- Ascrew resting on the seat formed for it on top of thegrooves in the wings, as shown in fig. 3.

In making mouldings, one ofthe wings with the chisels being set, theother can be adjusted to followin its v'track exactly, by turning theadjusting-screw e, without loosening the screw v that clamps thechisels.

In cutting out grooves, it is often desirable to'vary the width of thegroove, which can be done by this cutter-head, without changing thechisels, simply by raising one wing up until the combined cut of bothchisels gives the proper width. This can be carried nearly to the widthofthe two chisels.

In the common heads, the chisel for cutting grooves is made slightlytapering from the cutting-edge, so that theyY will not hind.- By myarrangement, this is not necessary. The chisels being made a trienarrower .than is desired to make the groove, one wing is raised, whichcauses the line of cut of the one tohe above, and ofthe other tobe'below the line of cut, where the chisels are directly in range, thuscutting a wider groove than the widthof one chisel, and relieving thetendency to bind in the cut. The clamping-screw y is tightened, when thewings are adjusted, and holds them rigidly.

What I claim as my invention, and desire to secure by Letters Patent,is-

The rotary cutter-head, having one or more wings for holding the.knives, made adjustable longitudinally, constructed to operatesubstantially as described.

SAMUEL FAWCETT.

Witnesses:

JAS. S. GAGE, GEO. H. GAGE.

